Canadian Permafrost Association’s Post

🏞 I had always been very eager to learn more about fluvial hydraulics, which was possible a course led by Prof. António Heleno Cardoso, in which I developed a project with my colleagues Anna Ceni and Leila alizadeh. We designed a river reach with the goal of achieving a stable cross-section, including the design of meanders and of lateral dikes for flood protection. We achieved a final channel geometry using regime theories including Lacey, Blench, Simons and Albertson, as well as rational methods like Lacey and Duboys, and White et al. (1981) method. It’s amazing to see that each theory might result in a very different geometry by changing each parameter by just a bit. With this geometry, we analyzed sediment concentration and the bed forms for the river reach. Then we designed stable meanders while considering environmental factors to enhance habitat diversity and protect channel corridors. Finally, we did a HEC-RAS 2D model to determine the height of lateral embankments, ensuring flood protection. After the course I also included sediment transport in the model to verify if the channel was really stable in terms of erosion and sediment deposition. With dam removal projects gaining momentum in both North America and Europe, it is important to study this topics to rehabilitate those sites. Also, in the context of new HPPs it is important to estimate and mitigate the impact of the construction of the dam in the in the river reach, including erosion and deposition due to changes in the sediment regime. 💧🏞️ #FluvialHydraulics #RiverRehabilitation #SustainableEngineering

Just Published Drought‑induced stability reduction in unsaturated geotechnical applications We are delighted to announce that our staff member, Assistant Prof. Bestun Shwan has recently published a paper on the effects of drought in the Scopus-indexed journal, Modeling Earth Systems and Environment (Q1). ▶ In this paper, the negative effect of the drought on common geotechnical problems has been addressed. ▶ The study uses upper bound theorem to analyze drought's impact on unsaturated geotechnical aspects: bearing capacity, slope, and tunnel stability. ▶Parametric study confirms significant stability reduction due to drought across various saturation levels for two simulated soils. ▶Drought negates benefits from suction effects, affecting stability across all studied problems. ✴ Read more about the paper at the link below. https://lnkd.in/ef8usN2H #SCOPUSIndexing #Score:5.3 #Quartile:Q1 #drought #suction #unsaturated #bearingcapacity #slopestability #tunnel #Geotechnical

【ARHCS (Automatic Rainfall Half-Life Cluster System): A Landslides Early Warning System (LEWS) Using Cluster Analysis and Automatic Threshold Definition】 Full article: https://lnkd.in/gw2ge3fA (Authored by Cassiano Antonio Bortolozo, et al., from Cemaden - National Center for Monitoring and Early Warning of Natural Disasters, General Coordination of Research and Development (Brazil), etc.) The examination and prediction of #landslides have become imperative across diverse scientific domains. A significant portion of Landslide Early Warning Systems (#LEWS) relies on the definition of operational thresholds and the monitoring of cumulative rainfall for alert issuance. This study devlops a new methodology for a Landslides Early Warning System (LEWS) based on the concept of rainfall half-life and the determination of thresholds using #Cluster_Analysis, considering both triggering and preparatory rains.  

#Upper_Part_Of_Mhlathuze_Catchment As groundwater reflects as an unfrozen freshwater emerging in the subsurface environment, it serves as critical zones that contribute to earth across the international regions. With such considerable perspectives, the subsurface hydrology is prominent as it informs the occurrence and circulations of groundwater align with the composition of soil properties as a top provenance that promote an extension life of plants resilience and support neighbouring surface water bodies recharging to the aquifer systems (Condon et al., 2021). Hence, It is with profound pleasure to measure groundwater level whenever you are conducting a field campaign to monitor changes in the water table/potentiometric surface in response to seasonal variation (rainfall and recharge), groundwater abstraction or Managed Aquifer Recharge (MAR) . Commonly, deep meter is employed in vast majority field works as depicted in the posted photo.

How to Calculate the quantity of Earthwork in the Road. https://lnkd.in/dap7h4Eb

Registration is open for Dr. John Field's stream restoration course 4/30-5/3. This three-day short course will explore the principles of fluvial geomorphology and stream restoration in a virtual format. An optional virtual field trip of stream restoration sites in the Chesapeake Bay region and possibly other locations is also available and will include live interaction with the field trip leader. The course is designed for government officials, environmental and engineering consultants, non-profit watershed groups, , construction contractors, educators and students, and others trying to sustainably address flooding, erosion, habitat, and sediment and nutrient loading issues along rivers and streams. While some quantitative methods will be introduced, the course will focus on the underlying concepts of fluvial geomorphology that are needed to effectively apply and interpret the results of quantitative analyses used in stream restoration designs. Fluvial geomorphology is also critical for anticipating how streams respond, both positively and negatively, to human activities along rivers and streams, including stream restoration projects. The short course will highlight process-based restoration practices, which are typically more effective, sustainable, and cost effective than form-based practices. Whether designing stream restoration projects yourself or reviewing plans to determine their potential effectiveness, this short course will provide you with the background and practical experience to identify the best restoration approaches for a particular setting and set of project objectives. Learn more and register: https://ow.ly/wGXv50QtxAM

Download free of charge our latest article published as open access on Acta Geotechnica about the effect of extraordinary climatic spells on hysteretic seasonal seepage in an unsaturated infinite slope. https://lnkd.in/dubbY8Z6

After extensive work, I am pleased to announce that a portion of my research has been published in the Geosciences Journal as part of the Special Issue on Natural Hazards. The article is titled “Impact Assessment of Digital Elevation Model (DEM) Resolution on Drainage System Extraction and the Evaluation of Mass Movement Hazards in the Upper Catchment.” This study investigates the impact of DEM resolution on drainage system extraction and the critical identification of 0-order basins or upper catchment areas, which are highly susceptible to mass movement hazards. The findings of this research have significant implications for hazard management, water resource management, and flood analysis. For further details, I invite you to read the full paper available on my ResearchGate profile https://lnkd.in/gWuuRQkY or in the Geosciences Journal https://lnkd.in/gw2e6uCT #HazardManagement, #NaturalHazards, #DEMResolution, #HydrologicalModeling #0_OderBasin

Before breaking ground on any construction project there needs to be a geological survey in place. Avoid large-scale environmental impact by using specialized core bits to extract soil samples for testing.

Mostap Soil Sampling, a geotechnical service is used to study the ground and how it behaves. It is a special way to collect soil samples from different depths in the ground. Geotechnical examinations are valuable for recognizing potential threats such as unsteady soil, groundwater, and seismic tremors. 𝐀𝐝𝐯𝐚𝐧𝐭𝐚𝐠𝐞𝐬 𝐨𝐟 𝐌𝐨𝐬𝐭𝐚𝐩 𝐒𝐨𝐢𝐥 𝐒𝐚𝐦𝐩𝐥𝐢𝐧𝐠: • Accuracy & Reliability • Cost-Effectiveness • Time Efficiency 𝐀𝐩𝐩𝐥𝐢𝐜𝐚𝐭𝐢𝐨𝐧𝐬 𝐨𝐟 𝐌𝐨𝐬𝐭𝐚𝐩 𝐒𝐨𝐢𝐥 𝐒𝐚𝐦𝐩𝐥𝐢𝐧𝐠: • Construction Industry • Infrastructure Development • Environmental Studies 𝐑𝐞𝐚𝐝 𝐌𝐨𝐫𝐞: https://lnkd.in/dU3y23PD 𝐄𝐧𝐪𝐮𝐢𝐫𝐞 𝐍𝐨𝐰: https://lnkd.in/d-YHZRp6 #GeotechnicalEngineering #SoilSampling #GroundAnalysis #GeotechnicalServices #SoilTesting #AccuracyAndReliability #CostEffective #TimeEfficient #ReliableData #PreciseTesting #ConstructionIndustry #InfrastructureDevelopment #EnvironmentalStudies #CivilEngineering #SustainableConstruction #GeotechnicalSolutions #ConstructionSafety #InfrastructureGrowth #EnvironmentalProtection #GroundStability